Abstract

This dissertation elaborates and defends a certain broad orientation in the philosophy of mind---the inferentialism of Sellars and Brandom---and explores the striking consequences of that orientation for the field of practical reason. Inferentialism aims to understand the significance of various philosophically important concepts in terms of their role in inference. In the first part of the dissertation, I use an analysis of inference to draw a distinction between two types of practical reasoning: reasoning that takes facts as reasons for acting, and reasoning that takes practical attitudes as reasons for acting. I argue that once we take a contextualist, non-foundationalist approach to practical reasoning---and we should---we realize that neither form of reasoning is more fundamental or primary than the other. This leaves behind a number of current debates between Humeans and their opponents. In the second part, I examine three important, practically-oriented mental states: intentions, evaluative beliefs, and desires. Using their role in practical reasoning as a guiding thread in my analysis, I arrive at novel accounts of each. I analyze intentions as practical commitments, the linchpin of practical reasoning, and reveal their deep connection with beliefs. Desires are understood in terms of intentions, reversing the usual direction of analysis, while evaluative beliefs are approached via a distinction between acknowledging and attributing practical states.